Re: [Ilugc] why embedded Linux not having swap partition.

> I must thank the OP for bringing up this question because > after posting my earlier response I wanted to understand > this in more detail and found this gem: > > http://www.embeddedinsights.com/channels/2010/07/21/to-mmu-or-not-to-mmu/ > Interesting article, thanks for sharing. -- 0 _

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, 2012-03-28 at 15:21 +0200, Krishna wrote: > > This thread is full of theoretical stuff, lot of useful info but > > nowadays I only deal with practical reality. > > > > This is No Theory, I am not understanding what you mean by practical > reality. > Can you explain the difference? How far

Re: [Ilugc] why embedded Linux not having swap partition.

>> This thread is full of theoretical stuff, lot of useful info but >> nowadays I only deal with practical reality. >> >> That is the single biggest problem with the people I meet here in LUG. >> >> You have to get practical doubts. >> >> Theory is fine but we have to grow beyond that. >> >> I hav

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 6:24 PM, Girish Venkatachalam wrote: > This thread is full of theoretical stuff, lot of useful info but > nowadays I only deal with practical reality. > > That is the single biggest problem with the people I meet here in LUG. > > You have to get practical doubts. > > Theory

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 4:54 PM, Raja Subramanian wrote: > On Wed, Mar 28, 2012 at 3:45 PM, Zico wrote: > > I am sorry, but, what does it means by "access times are non > deterministic"? > > Pardon me, I don't have any knowledge on Embedded system architecture. :) > > "non deterministic" is CS li

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 2:54 PM, Girish Venkatachalam < girishvenkatacha...@gmail.com> wrote: > This thread is full of theoretical stuff, lot of useful info but > nowadays I only deal with practical reality. > This is No Theory, I am not understanding what you mean by practical reality. Can you e

Re: [Ilugc] why embedded Linux not having swap partition.

This thread is full of theoretical stuff, lot of useful info but nowadays I only deal with practical reality. That is the single biggest problem with the people I meet here in LUG. You have to get practical doubts. Theory is fine but we have to grow beyond that. I have worked on few embedded sy

[Ilugc] Fwd: [Ubuntu-manual] Getting Started with Ubuntu 11.10 has been released

-- Forwarded message -- From: "Kevin Godby" Date: Mar 28, 2012 2:28 PM Subject: [Ubuntu-manual] Getting Started with Ubuntu 11.10 has been released To: "Manual mailing list" Good news, everyone! The Ubuntu Manual team is proud to announce the release of Getting Started with Ubun

Re: [Ilugc] why embedded Linux not having swap partition.

>I am sorry, but, what does it means by "access times are non deterministic"? >Pardon me, I don't have any knowledge on Embedded system architecture. :) The reason why it could be non deterministic is because there could be interrupts trig erred by virtual memory systems during I/O which could ca

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 3:45 PM, Zico wrote: > I am sorry, but, what does it means by "access times are non deterministic"? > Pardon me, I don't have any knowledge on Embedded system architecture. :) "non deterministic" is CS lingo for unpredictable. Assume you are accessing a memory address, if

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 11:35 AM, Balaji Foss wrote: > >Swap memory is concerned with paging. > >http://en.wikipedia.org/wiki/Paging > > Paging is part of Virtual Memory. Page tables maintain the mapping between > the Virtual Memory and the Physical Memory. >

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 3:35 PM, Balaji Foss wrote: > >Swap memory is concerned with paging. > >http://en.wikipedia.org/wiki/Paging > > Paging is part of Virtual Memory. Page tables maintain the mapping between > the Virtual Memory and the Physical Memory. >

Re: [Ilugc] why embedded Linux not having swap partition.

> >> You have virtual memory in embedded system. > > Embedded systems generally dont have Virtual Memory because the access > times are non deterministic. > Don't applications/processes on embedded system have their own dedicated address space ? I would think having dedicated address space requir

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 3:05 PM, Balaji Foss wrote: > Embedded systems generally dont have Virtual Memory because the access > times are non deterministic. > > In general, very few embedded systems really need deterministic operation. Irrespective of virtual memory support, none of the run-of-the

Re: [Ilugc] why embedded Linux not having swap partition.

>Swap memory is concerned with paging. >http://en.wikipedia.org/wiki/Paging Paging is part of Virtual Memory. Page tables maintain the mapping between the Virtual Memory and the Physical Memory. >You have virtual memory in embedded system. Embedded systems g

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 9:20 AM, Balaji Foss wrote: > >I am asking silly doubt. Why embedded linux not having swap partition, I > > have scened many embedded distros(debian6, ubuntu,open embedded). All > have > > doe's not have swap partition. when I try to install with X86 it's > > mandatory sw

Re: [Ilugc] why embedded Linux not having swap partition.

On Wed, Mar 28, 2012 at 12:41 PM, Ganesh Kumar wrote: > I am asking silly doubt. Why embedded linux not having swap partition, - From a design perspective, the design team will know how much RAM is required for a purpose built embedded device. This amount of RAM would have been provis

Re: [Ilugc] why embedded Linux not having swap partition.

>I am asking silly doubt. Why embedded linux not having swap partition, I > have scened many embedded distros(debian6, ubuntu,open embedded). All have > doe's not have swap partition. when I try to install with X86 it's > mandatory swap will there. please guide me guys. AFAIK you don't need Virtu

[Ilugc] why embedded Linux not having swap partition.

Hi guys, I am asking silly doubt. Why embedded linux not having swap partition, I have scened many embedded distros(debian6, ubuntu,open embedded). All have doe's not have swap partition. when I try to install with X86 it's mandatory swap will there. please guide me guys. -Ganesh. Did I learn s